Both fights looks to be exciting to me.

Floyd will outbox anyone. But Floyd flaws been showing more and more with his last few fights. Cotto could very well be the right opponent at the wrong time for Floyd. At Floyd have been walking fighters down. So an exchange is inevitable. But the biggest is Floyd's willingness to lay on the ropes. Cotto strongest chance of winning. Although I believe Floyd will win this fight fairly easy with his sharp jab and Cotto's, "live to fight another day" model, I still think at some point early in this fight, Cotto will have his chance.
Mayweather by TKO 9

Bradley vs Pacman. I won't bet on this fight because I'm routing for Bradley. The kid want to fight. Pretty good boxing skills and can slug. Just don't think either is good enough to defeat Pacman. Saying that, Bradley saw the blueprint to beating Pacman in all of the JMM fights. If he can use counterpunching as gameplan "B", and if his gameplan is not working, he have a shot.
Pacman by stoppage by the ref rd 9

As far as Mayweather and Pacman meeting, it will never happen. Arum already said JMM vs Peterson winner will fight Pacman. Saying that, I might as well talk about the next 2 P4P boxers

3. JMM vs Peterson. Peterson is not going to be hard to find. Which makes me think JMM is going to tear his a$$ to pieces. BUT, Peterson will to win and youth IMO, is what's going to get him the "W". Just as much as Peterson is not hard to find, neither is JMM. They both are going to get hit, but Peterson lands hard and hard often in which JMM won't recover as he usually do.
Peterson by ko rd 6

4. Martinez? I don't know Macklin to well so I'll watch tape on him. But saying he will get past Macklin, Jcc Jr is next hopefully. Now in this fight, I will bet.
Jcc Jr by MD over Martinez